#include <stdio.h>
#define SUM 100000
int main()
{
	float amount,aver,total;
	int i;
	for(i = 1,total = 0;i<=1000;i++)
	{
		printf("please enter amount:");
		scanf("%f",&amount);
		total = total + amount ;
		if(total>=SUM)
		break;
		
	}
	aver = total/i;
	printf("num = %d\n  aver= %10.2f\n",i,aver);
	return 0;
	
}
